Answer:
17
Step-by-step explanation:
Vertically opposite angles are equal
so
7x - 9 = 110
7x = 119
x = 17
Answer:

From this info and using the empirical rule we know that we will have about 68% of the scores between:


95 % of the scores between:


And 99.7% of the values between


Step-by-step explanation:
For this problem we can define the random variable of interest as "the student grades" and we know that the distribution for X is given by:

From this info and using the empirical rule we know that we will have about 68% of the scores between:


95 % of the scores between:


And 99.7% of the values between


Answer:
136.99
Step-by-step explanation:
Đây là một câu hỏi dễ chỉ cần sử dụng máy tính